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The IBM 1400 series were second generation (transistor) mid-range business decimal computers that IBM marketed in the early 1960s. 1400-series machines stored information in magnetic cores as variable length character strings separated at the left and right by a special flag, called word mark. Arithmetic was performed digit-by-digit. Input and output support included punched card, magnetic tape and high speed line printers. Disk storage was also available. Many members of the series could be used as independent systems, as extensions to IBM punched card equipment, or as auxiliary equipment to other computer systems. Some, however, were intended for specific applications or were economical only as independent systems. == History == The 1401 was the first member of the IBM 1400 series. It was the first computer to deploy over 10000 units.〔(Columbia University, Computing History Project, 1401 page )〕 The IBM 1410 was a similar design, but with a larger address space. The IBM 1460 was logically but not physically identical to a fully optioned 1401 with 16,000 characters of memory, and twice as fast. The 1240 was a banking system, equivalent to the 1440 system with MICR support. The IBM 7010 was logically but not physically identical to a 1410, and twice as fast. Members of the 1400 series included: * IBM 1240 - 1963 * IBM 1401 - 1959 * IBM 1410 - 1960 * IBM 1420 - 1962 * IBM 1440 - 1962 * IBM 1450 - 1968 * IBM 1460 - 1963 * IBM 7010 - 1962 Peripherals used with 1400 series machines included: *Card reader/punches: IBM 1402, IBM 1442 * Printers: IBM 1403, IBM 1443 * 7 track tape drives: IBM 729, IBM 7330 * Disk drives: IBM 1301, IBM 1311 * Check processing IBM 1210 * Paper tape input/output 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IBM 1400 series」の詳細全文を読む スポンサード リンク
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